Question

question 4
0.5 pts
alleles are described as

homologous chromosomes
environmental factors that affect gene expression
alternate versions of a gene
alternate phenotypes

Explanation:

Alleles are different forms of the same gene. For example, in the gene for flower color, there could be an allele for purple color and an allele for white color. Homologous chromosomes are pairs of chromosomes (one from each parent) that have the same genes but not necessarily the same alleles. Environmental factors are external conditions like temperature or light that can influence gene expression but are not alleles. Alternate phenotypes are the observable traits (like purple or white flowers) which are the result of alleles interacting (along with environmental factors in some cases), but alleles themselves are the genetic variants.

Answer:

C. alternate versions of a gene